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New Methodology to Estimate Costs Caused by Rail Wear and RCF Depending on the Type of Running Gear
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. KTH, School of Engineering Sciences (SCI), Centres, The KTH Railway Group. (Spårfordon)ORCID iD: 0000-0002-4477-971x
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.ORCID iD: 0000-0002-6346-6620
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.ORCID iD: 0000-0002-8237-5847
2020 (English)In: IAVSD 2019: Advances in Dynamics of Vehicles on Roads and Tracks / [ed] Matthijs Klomp, Fredrik Bruzelius, Jens Nielsen and Angela Hillemyr, Springer Nature , 2020Conference paper, Published paper (Refereed)
Abstract [en]

A new methodology to estimate costs for wear and Rolling Contact Fatigue (RCF) on rails that cause a major portion of track maintenance costs is presented. It is demonstrated for a standard UIC-Y25 bogie and a FR8RAIL bogie, a softer and cross-braced iteration of the former. The rail profile evolution and the surface-initiated fatigue on the rail surface for different track radii with progressive tonnage are calculated using multi-body simulations. ‘Fastrip’ is used to calculate tangential stresses on the contact patch. Various non-linearities in the vehicle and track models have been considered, based on running conditions on the Swedish Iron-ore line. A cyclic rail grinding procedure at fixed tonnage intervals based on recommendations from EN13231-5 is implemented, to also account for the effect of track maintenance on the rate of rail surface damage. The wear depths (W), worn cross-sectional areas (A) and the number of axle passes that carry a risk for RCF initiation (Nr) are presented and discussed for 100 Mega Gross Tonnes passage. In doing so, the methodology addresses ‘track-friendliness’ of the running gear considering both its design and the track maintenance strategies.

Place, publisher, year, edition, pages
Springer Nature , 2020.
Series
Lecture Notes in Mechanical Engineering, ISSN 2195-4356, E-ISSN 2195-4364
Keywords [en]
Track-friendliness, Rail wear and RCF, Cyclic grinding, Rail profile evolution, Running gear
National Category
Mechanical Engineering
Research subject
Vehicle and Maritime Engineering; Järnvägsgruppen - Fordonsteknik
Identifiers
URN: urn:nbn:se:kth:diva-267717DOI: 10.1007/978-3-030-38077-9_84ISI: 000675429300084Scopus ID: 2-s2.0-85081624466OAI: oai:DiVA.org:kth-267717DiVA, id: diva2:1393054
Conference
The IAVSD International Symposium on Dynamics of Vehicles on Roads and Tracks
Projects
FR8RAIL (Grant no. 730617)
Funder
EU, Horizon 2020, 730617
Note

QC 20200608

Available from: 2020-02-14 Created: 2020-02-14 Last updated: 2023-03-28Bibliographically approved

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Krishna, Visakh VHossein Nia, SaeedStichel, Sebastian

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